*** empty log message ***

diff --git a/tests/envvar-check b/tests/envvar-check
new file mode 100644 (file)
index 0000000..5784949
--- /dev/null
+++ b/tests/envvar-check
@@ -0,0 +1,14 @@
+unset VERSION_CONTROL SIMPLE_BACKUP_SUFFIX
+
+if test "${VERSION_CONTROL+set}" = set; then
+  echo "$0: the VERSION_CONTROL envvar is set --" \
+    ' unset it and rerun this test' >&2
+  exit 1
+fi
+
+if test "${SIMPLE_BACKUP_SUFFIX+set}" = set; then
+  echo "$0: the SIMPLE_BACKUP_SUFFIX envvar is set --" \
+    ' unset it and rerun this test' >&2
+    >&2
+  exit 1
+fi